Francisco Diaz Telli, Daniel Muse and Fernando Godoy ; Tenaris Sucker Rods
Conventional Sucker Rods were designed and thought for Beam Pumping applications as well as their make-up process (with circumferential displacement). This brought many failures in the connection which is supposed to be stronger than the rod body. A line of Hollow Sucker Rods (HSR) was developed with better material distribution and several advantages but basically providing more reliability due to the fact that they were thought from the development for PCP. They include a special connection with a SEC type of threads and torque shoulder which is made-up controlling torque with a regular pipe power tong. This paper shows the experience in a field located in south Argentina were HSR have been working for more than 5 years in 17 wells. Field results and failures are discussed as well as special issues to have in mind when producing with this alternative.